Move from setup.cfg to pyproject.toml

Most of the projects have already migrated to setup using pyproject.toml
so we should follow that.

Change-Id: I3acd27f4c652745af3ee2471f869d34e9de26d39
Signed-off-by: Dmitriy Rabotyagov <dmitriy.rabotyagov@cleura.com>

pyproject.toml

@@ -1,3 +1,44 @@
 [build-system]
 requires = ["pbr>=6.1.1"]
 build-backend = "pbr.build"
+
+[project]
+name = "openstack-ansible"
+description = "Ansible playbooks for deploying OpenStack"
+readme = "README.rst"
+license = "Apache-2.0"
+license-files = ["LICENSE.txt"]
+authors = [
+    {name = "OpenStack", email = "openstack-discuss@lists.openstack.org"},
+]
+classifiers = [
+    "Intended Audience :: Developers",
+    "Intended Audience :: System Administrators",
+    "Operating System :: POSIX :: Linux",
+]
+dynamic = ["version", "dependencies"]
+
+[project.urls]
+Homepage = "https://docs.openstack.org/openstack-ansible/latest/"
+"Bug Tracker" = "https://bugs.launchpad.net/openstack-ansible/"
+Repository = "https://opendev.org/openstack/openstack-ansible"
+"Release notes" = "https://docs.openstack.org/releasenotes/openstack-ansible/"
+
+[project.optional-dependencies]
+releases = [
+    "ruamel.yaml>=0.18",
+    "Jinja2>=3.0",
+]
+
+[project.scripts]
+openstack-ansible-inventory = "osa_toolkit.generate:main"
+openstack-ansible-inventory-manage = "osa_toolkit.manage:main"
+openstack-ansible-releases = "osa_toolkit.releasing:main"
+
+[tool.setuptools]
+packages = [
+    "osa_toolkit"
+]
+
+[tool.setuptools.dynamic]
+dependencies = {file = ["requirements.txt"]}

setup.cfg

@@ -1,38 +1,2 @@
 [metadata]
 name = openstack-ansible
-summary = Ansible playbooks for deploying OpenStack
-description_file =
-    README.rst
-license = Apache-2.0
-author = OpenStack
-author_email = openstack-discuss@lists.openstack.org
-home_page = https://docs.openstack.org/openstack-ansible/latest/
-classifier =
-    Intended Audience :: Developers
-    Intended Audience :: System Administrators
-    Operating System :: POSIX :: Linux
-
-[build_sphinx]
-all_files = 1
-build-dir = doc/build
-source-dir = doc/source
-
-[pbr]
-warnerrors = True
-
-[wheel]
-universal = 1
-
-[files]
-packages = osa_toolkit
-
-[options.extras_require]
-releases =
-    ruamel.yaml
-    Jinja2
-
-[options.entry_points]
-console_scripts =
-    openstack-ansible-inventory = osa_toolkit.generate:main
-    openstack-ansible-inventory-manage = osa_toolkit.manage:main
-    openstack-ansible-releases = osa_toolkit.releasing:main [releases]